The PDF filetype plugin can do that. You can find it on the forums here: http://forums.getpaint.net/index.php?/topic/22863-portable-document-format-filetype-plugin-pdf/ You won't even need to use a PDF printer.
Hey, I was trying to use this plugin to separate a picture into separate pictures and I believe that I can do that with this plugin. My issue is that the maximum width and height of a cell is 1000px. For this image, I need 735px x 1024px cells. Could you please either remove the maximum or raise it to something larger? It would be greatly appreciated.